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August 30, 2016

Search: A 63 cm diameter wheel accelerates uniformly about its center from 120 rpm to 310 rpm in 3.3 s.

Number of results: 47,633

Physics
A mass accelerates uniformly when the resultant force acting on it is......?
April 19, 2014 by Blessing

physics
A clothes dryer is spinning at 75 rpm. A student opens its door and it comes to rest after rotating through four revolutions. Assume constant deceleration. What was the magnitude of the dryer's angular deceleration?
March 23, 2011 by HARD!!!!

physics
A clothes dryer is spinning at 75 rpm. A student opens its door and it comes to rest after rotating through four revolutions. Assume constant deceleration. What was the magnitude of the dryer's angular deceleration?
March 23, 2011 by need help as soon as possible

Physics (angular momentum)
A solid disk of 5kg and radius 0.5m turns at the rate of 10rpm. You then carefully place a 2kg book at the edge of table as it spins. What is the new rotation rate of the table(in rpm)?
July 15, 2012 by Kayla

Physics
A conical pendulum is formed by attaching a 0.60kg ball to a 1.0m -long string, then allowing the mass to move in a horizontal circle of radius 30cm. 1. What is the tension in the string 2. What is the ball's angular velocity in rpm?
March 21, 2013 by Leanna

Math
In one revolution a wheel moves forward a distance equal to its circumference. This is because the wheel Always in contact with the floor. 1)A trundle wheel clicks everytime. What is the radius of the wheel
October 5, 2013 by Bob

Language Arts
A community center has announced that it will close next month which of the following types of writing could you use most effectively to try to change the situation? A) A letter to the editor urging newspaper readers to come to a "save the center" rally••• B) A reflection ...
January 11, 2016 by Amanda

physics
A laboratory centrifuge on earth makes n rpm (rev/min) and produces an acceleration of 7.00 g at its outer end. What is the acceleration (in g's, i.e., acceleration divided by g) at a point halfway out to the end?
November 27, 2010 by jessica

physics
A laboratory centrifuge on earth makes n rpm (rev/min) and produces an acceleration of 7.00 g at its outer end. What is the acceleration (in g's, i.e., acceleration divided by g) at a point halfway out to the end?
November 27, 2010 by jessica

trig
a wheel has a diameter of 18 inches and makes one full turn in 12 seconds and picks up a piece of gym how high off the ground is that piece of gum 18 seconds after the wheel picked it up
September 11, 2010 by suZANNE

mechanical science
10. A car is moving in a straight line starts from rest, accelerates uniformly at 12 m/s2 for the first 5s, then travels at uniform speed for the next 2s and finally decelerates uniformly at 4 m/s2 for the next 5s. Draw the acceleration-time graph, velocity-time graphs and ...
December 20, 2012 by anshuman kumar

MAth algebra 1
Steve is driving to a ski resort. At first, he drove at a rate of 65 mph. Then a snow storm started and he had to slow down to 40 mph. In total. it took him 6 hours to drive 310 miles. Which system of equations represents this situation? A. 6x + y= 1 x + y= 310 B. x + y= 105 ...
February 8, 2016 by dbzaltheway

Physics
The blades in a blender rotate at a rate of 6500 rpm. When the motor is turned off during operation, the blades slow to rest in 2.6 s. 1. What is the angular acceleration as the blades slow down?
November 22, 2010 by Nick

Physics
The motion of a piston in an automobile engine is nearly simple harmonic. If the 1-kg piston travels back and forth over a total distance of 10.0 cm, what is its maximum speed when the engine is running at 3 000 rpm? The answer is 15.7 m/s but I don't understand how to get there.
July 9, 2010 by Katie

Trig
A Ferris wheel is 40 meters in diameter and boarded from a platform that is 4 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel completes 1 full revolution in 2 minutes. How many minutes of the ride are spent ...
February 13, 2013 by Christine

precalculus
A Ferris wheel is 10 meters in diameter and boarded from a platform that is 3 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel completes 1 full revolution in 4 minutes. How many minutes of the ride are spent ...
July 9, 2014 by Anonymous

physics
A thin nonconducting rod is bent to form a semi-circle of radius R. A charge Q is uniformly distributed along the upper half and a charge -Q is uniformly distributed along the lower half, as shown int he sketch at the right.find E vector at P, the center of the semi-circle. ...
September 13, 2010 by peter

physics 2
A thin nonconducting rod is bent to form a semi-circle of radius R. A charge Q is uniformly distributed along the upper half and a charge -Q is uniformly distributed along the lower half, as shown int he sketch at the right.find E vector at P, the center of the semi-circle. ...
September 13, 2010 by peter

physics
what is the average velocity of a vehicle that uniformly accelerates from rest to 38 fps?
September 27, 2011 by lou

physics
What is its speed after 1.87 s if it accelerates uniformly at −4.31 m/s^2? Answer in units of m/s
September 3, 2012 by selena

Physics
An automobile uniformly accelerates from rest at 15 ft/s2 for 6s. What is the fanal velocity in ft/s? v=d/t 15 *6= 90 90ft/s
September 27, 2015 by RP

Physics
A wheel of arduous 30 cm is rotating at a rate of 2.0 revolutions every 0.080 s. Through what angle, in radians, does the wheel rotate in 1.0 s? What is the linear speed of a point on the wheel's rim? What is the wheel's frequency of rotation?
October 9, 2012 by Anonymous

Physics
The combination of an applied force produces a constant total torque of 39.6 N.m on a wheel rotating about a fixed axis. The applied force acts for 5.3 s. During this time, the angular speed of the wheel increases from 0 to 9.8 rad/s. Determine the moment of inertia of the wheel.
April 26, 2015 by Exes

statistics (college
An insurance company checks police records (in a city) on 500 accidents selected at random and notes that teenagers were at the wheel in 120 of them. It is desired to test if this information indicate that more than 20% of auto accidents involve teenage drivers in the city. ...
May 23, 2012 by Hannah

Physics
A Ferris wheel, rotating initially at an angular speed of 0.500 rad/s, accelerates over a 7.00-s interval at a rate of 0.04 rad/s^2. What angular displacement does the Ferris wheel undergo in this 7-s interval?
June 8, 2010 by Ashley

Physics
A turntable rotates counterclockwise at 63 rpm. A speck of dust on the turntable is at θ = 0.57 rad at t = 0 s. What is the angle of the speck at t = 9.5 s? Your answer should be between 0 and 2π rad.
April 3, 2014 by Jack

Physics
The distance between the centers of the wheels of a motorcycle is 169 cm. The center of mass of the motorcycle, including the rider, is 77.0 cm above the ground and halfway between the wheels. Assume the mass of each wheel is small compared to the body of the motorcycle. The ...
April 24, 2013 by Hubert

physcis
During a ski race, Kate uniformly accelerated at 3.15m/s^2 for 100meters. She then maintained this velocity for another 100m. she then uniformly decelerated at 6m/s^2 for 2 seconds. she accelerates back to her maximum velocity over the next 200meters in 16 seconds. she then ...
March 4, 2010 by jake

physics
During a ski race, Kate uniformly accelerated at 3.15m/s^2 for 100meters. She then maintained this velocity for another 100m. she then uniformly decelerated at 6m/s^2 for 2 seconds. she accelerates back to her maximum velocity over the next 200meters in 16 seconds. she then ...
March 4, 2010 by jake

math
At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 50 meters and a diameter of 35 meters. It takes the wheel three minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates counter clockwise, how ...
November 21, 2014 by jackie

Math
In one revolution a wheel moves forward a distance equal to its circumference. This is because the wheel Always in contact with the floor. 1)A trundle wheel clicks everytime. What is the radius of the wheel I really don't get this question Please Help me Thank you :)
October 5, 2013 by Linda

Science
The rider to a Ferris wheel moves at a rate of 0.18m/s2. If the rider is 5.0m from the center of the Ferris wheel, what is his/her velocity?
June 23, 2015 by Alfonz

Physics
A 15 kg child stands on the edge of a small merry-go-round of radius 2.0 m. If the merry-go- round turns at a steady rate of 11 rpm, calculate the magnitude and direction of the net force on the child.
March 25, 2012 by Kristina

physics
An object accelerates uniformly from rest at a rate of 2 m/s2 for 3 s and then 5 m/s2 for 15 s. Find its final velocity?
November 30, 2010 by Anonymous

physics
A car accelerates uniformly from 10m/s to 24m/s.Ehat is its average speed?
September 24, 2013 by cleverdoc2

Math
This question is really stressing me out. I don't even know where to start. The question is: The Northern Tier bicycle tour route from Anacortes, Washington, to Bar Harbor, Maine, is 4,264.5 miles long. How many more revolutions over the entire route will a 16 inch diameter ...
August 29, 2015 by Jules

physics
A hollow steel shaft has an external diameter of 120 mm and is 10 mm thick. It is coupled to a solid shaft of the same material, 100 mm in diameter. If the length of the hollow shaft is 960 mm, find the length of the solid shaft, so that the total angle of twist is limited to ...
May 18, 2013 by Anonymous

Trigonometry
My answer: Y= -82.5 cos (4pi/3)x+91.5 (Period: 1.5=2pi/b --> b= 4pi/3 ) The diameter of the wheel is 165 feet, it rotates at 1.5 revolutions per minute, and the bottom of the wheel is 9 feet above the ground. Find an equation that gives a passenger's height above the ground...
July 18, 2013 by Anonymous

physics
With a magnetic field perpendicular to a single 13.2 cm diameter circular loop of copper wire decreases uniformly from .670 T to zero. If the wire is 2.25 mm in diameter how much charge moves past a point in the coil during this operation?
April 28, 2014 by jon

physical science
A car drivers at 5 km/hr, consumes one liter of petrol per 50km. The RPM is 50. How many mintues will the car drive on one litre of petrol. Kindly supply formula and answer.
February 18, 2015 by eugene

Physics
(b)A centrifuge has a maximum rotation rate of 10,000 rpm and can be stopped in 4 seconds. Assume the deceleration is uniform. The centrifuge radius is 8 cm. (i)What is the average angular acceleration of the centrifuge?       (2%) (ii)What is the distance that a point on the ...
August 12, 2010 by Oisin

arithmetic
if the internal diameter of a cylindrical iron piep is 2.8 cm . If the pipe is melted uniformly by 1 mm then it formed a cylindrical rod ,find the diameter of the new rod?
November 5, 2014 by Anonymous

Math
A ferris wheel is 30 meters in diameter and boarded in the six o'clock position from a platform that is 10 meters above the ground. The wheel completes one full revolution every 10 minutes. At the initial time t=0 you are in the twelve o'clock position.Find a formula, using ...
December 10, 2012 by Elizabeth

Applied Mech.2
Find the Inside diameter(d) and outside diameter(D) of a hollow shaft given: Power transmitted by shaft=1400kW Shaft speed=45 RPM Angle of twist on shaft=1 degree Shaft lenght(L)=25D Assume d=0.6D Modulus of Rigidity(G)=81.75GPa My answer: Shaft ang. vel.=45*2pi/60s A.V.=4....
April 19, 2009 by Henri

phy
A record player takes 4.5 sec to spin up to 45 RPM. What is the angular displacement and angular velocity when t=3 sec. I was only able to find angular acceleration from the information given. Which is 1.05 rad/sec^2
May 4, 2016 by bonsnianbill

geometry
Name the diameter, radius, center, and the equation of the circle with a diameter that has endpoints at (-3, 4) and (5, -2).
February 7, 2013 by Anonymous

Math
You are in a car of a ferris wheel. The wheel has a radius of 8m and turns counterclockwise. Let the orgin be at the center of the wheel. Begin each sketch in parts a) and b) when the radius from the centre of the wheel to your car is along the positive x-axis. a) Sketch the ...
March 6, 2013 by Kristien

math
At the amusement park, you decide to ride the Ferris wheel, which has a maxmum height of 80 meters and a diameter of 40 meters. It takes the wheel seven minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates counter clockwise, how ...
November 21, 2014 by jackie

Phar Science
In a sedimentation experiment using a centrifuge rotating at 20,000 rpm at 25°C the position of the boundary between the settled phase and the supernatant for a protein was found to be at 6.153 cm at t = 300 s, 6.179 at 600 s, and 6.206 at 900 s. If D for the protein is 7.62...
April 5, 2011 by Sha

Phar Science
In a sedimentation experiment using a centrifuge rotating at 20,000 rpm at 25°C the position of the boundary between the settled phase and the supernatant for a protein was found to be at 6.153 cm at t = 300 s, 6.179 at 600 s, and 6.206 at 900 s. If D for the protein is 7.62...
April 5, 2011 by Sha

Physics
This is a very confusing problem, I had never taken physics before and it is going to kill my GPA. can someone please help me solve this problem. I have a quiz coming up. Thanks for the help. The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 137...
October 31, 2014 by Rhyan

physics
A space vehicle accelerates uniformly from 50m/s at t=0 to 182m/s at t=1 0.0s. How far did it move between t=2.0s and t=6.0s?
July 10, 2011 by victor

physics
a car starts from rest and accelerates uniformly at 2m/s for 10second. what is its velocity at the end of 10 second?
June 20, 2012 by Anonymous

Physics
how long does it take a car to change its velocity from 15m/s to 25m/s if it accelerates uniformly at 5m/s2.
November 23, 2015 by Prince

NCC
a sportscar starting from rest accelerates uniformly at 2m/s squared . What is the speed after 10S?
August 11, 2016 by kim

Math (please help!)
The largest Ferris Wheel in the world is the London Eye in England. The height (in metres) of a rider on the London Eye after t minutes can be described by the function h(t) = 67 sin[0.2094(t-30)] + 70 Using this equation i'm supposed to find the diameter, the maximum (top of ...
January 23, 2011 by Haley

Physics
A disk in your computer spins at 5400 rpm. If this disk turns through 12 revolutions before coming to stop, find the disks angular velocity acceleration. Also find the time it takes to stop.
June 12, 2013 by Kayla

trigonometry
If a flywheel is 3 feet in diameter and if a belt over the wheel is traveling at the rate of 3000 feet per minute, find the number of revolutions of the wheel per minute.
September 2, 2011 by Marie :)

Is my math correct?
Find the Inside diameter(d) and outside diameter(D) of a hollow shaft given: Power transmitted by shaft=1400kW Shaft speed=45 RPM Angle of twist on shaft=1 degree Shaft lenght(L)=25D Assume d=0.6D Modulus of Rigidity(G)=81.75GPa My answer: Shaft ang. vel.=45*2pi/60s A.V.=4....
April 20, 2009 by Henri

Physics
At a county fair, a boy and two friends bring their teddy bears on the giant Ferris wheel. The wheel has a diameter of 14.0 m, the bottom of the wheel is 1.9 m above the ground and its rim is moving at a speed of 1.0 m/s. The boys are seated in positions 45° from each other. ...
October 14, 2010 by Gina

Physics
At a county fair, a boy and two friends bring their teddy bears on the giant Ferris wheel. The wheel has a diameter of 14.3 m, the bottom of the wheel is 1.9 m above the ground and its rim is moving at a speed of 1.0 m/s. The boys are seated in positions 45° from each other. ...
October 27, 2011 by Jean

Math
A wheel on Greg's bicycle is 0.3 m in diameter. Greg races the bicycle for 31 m. How many times does the wheel turn as the bicycle travels this distance?
May 14, 2013 by James

physics
A wheel of mass 0.47 kg and radius 49 cm is spinning with an angular velocity of 24 rad/s. You then push your hand against the edge of the wheel, exerting a force F on the wheel as shown in the figure below. If the wheel comes to a stop after traveling 1/4 of a turn, what is F?
December 2, 2011 by samiyah

Physics
A 6 kg grinding wheel of radius 0.2 m rotates at a constant rotational frequency of 4 rad/s when an object makes contact with the outer edge of the wheel. Friction causes the wheel to stop in 2 seconds. What is the average torque on the wheel by the frictional force?
February 5, 2013 by Physics

Science
A 6 kg grinding wheel of radius 0.2 m rotates at a constant rotational frequency of 4 rad/s when an object makes contact with the outer edge of the wheel. Friction causes the wheel to stop in 2 seconds. What is the average torque on the wheel by the frictional force?
February 5, 2013 by Physics

Math
A ferris wheel makes one rotation in 15 minutes. Find your car's location and the angle of rotation after: 3 mins., 5 mins., 9 mins., 12 mins. The diameter of the wheel is 328 ft. and the height, with the base, is 369 ft.
May 14, 2012 by Ann

physics
A ferris wheel makes one rotation in 15 minutes. Find your car's location and the angle of rotation after: 3 mins., 5 mins., 9 mins., 12 mins. The diameter of the wheel is 328 ft. and the height, with the base, is 369 ft.
May 15, 2012 by Ann

Math
A river does 6,500 J of work on a water wheel every second. The wheel's efficiency is 12%. a. How much work in joules can the axle of the wheel do? b. What is the power output of the wheel in 1 s?
November 3, 2012 by Leah

Electricity
A motor running at its rated power provides 2.6 lb-ft torque at its rated speed of 2020 rpm. The motor draws 5.6-A from a 230-V supply at a phase angle of 37 degrees. Determine the following: The horsepower delivered by the motor, The efficiency of the motor.
January 24, 2008 by Nick

Physics
A 0.4kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.3 m on a frictionless horizontal surface. If the cord will break when the tension in it exceeds 65 N, what is the maximum rpm(revolution per minute) the ball can have? HELP?
March 1, 2013 by Derrick

Physics
When a solid wheel rotates about a fixed axis, do all of the points of the wheel have the same tangential speed?
January 24, 2010 by courtney!!

physical science
A river does 6,500 j of work on a water wheel every second. The wheel efficiency is 12%. A. How much work in joules can the axle of the wheel do? B. What is the power output of the wheel in 1 s?
November 6, 2014 by Aurora Simmons

physics
The string is pulled so that it accelerates at3 m/s^2. What is the angular acceleration of the wheel?
March 6, 2012 by Amy

Physics
A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tension in the string?
January 3, 2013 by Alex

physics
A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tension in the string?
January 4, 2013 by al

Physics
The combination of an applied force and a frictional force produces a constant total torque of 38.1 Nm on a wheel rotating about a fixed axis. The applied force acts for 7.00 s, during which time, the angular speed of the wheel increases from 2.40 rad/s to 12.5 rad/s. The ...
April 26, 2010 by Tessa

physics
a car traveling at 7.0 m/s accelerates uniformly at 2.5 m/s TO REACH A SPEED OF 12.0 M/S HOW LONG DOES IT TAKE FOR THIS ACCELERATION TO OCCUR?
September 26, 2007 by DAISY

Physics
An automobile with an initial speed of 3.56 m/s accelerates uniformly at the rate of 2.7 m/s2. Find the displacement of the car after 4.1s.
February 3, 2011 by Courtney

Physics
An object accelerates uniformly from rest and covers 8m in 2 seconds. What is the distance covered in the third second?
March 27, 2012 by Allwell

physics
A cara accelerates uniformly from rest to a speed of 21.9 km/h in 8.5 s. Find the distance it travels during this time.
September 20, 2012 by tammi

physics
A car traveling 28 mi/h accelerates uniformly for 6.7 s, covering 555 ft in this time. What was its acceleration? Answer in units of ft/s 2
October 6, 2012 by Ann

Physics
A car accelerates uniformly from rest at 3m/s(square).What is its velocity after travelling a distance of 24m?
September 10, 2014 by Dammy

Physics
A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tangential velocity, v, of the plane? .
January 3, 2013 by Alex

Physics
A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tangential velocity, v, of the plane? .
January 3, 2013 by Alex

physics with 6 questions
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.3 m/s2 for 3.9 seconds. It then continues at a constant speed for 13.7 seconds, before applying the brakes such that the ...
August 27, 2012 by David

English
1. Mom had to check the timer every 10 minutes. 2. Mom had to check the timer every 10th minute. (Can we use both expressions?) 3. How about going at 6:00 at the art center. 4. How about coming at 6:00 at the art center. 5. How about arriving at 6:00 at the art center. 6. How ...
December 9, 2010 by rfvv

Math
At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 50 meters and a diameter of 35 meters. It takes the wheel 13 minutes to make one revolution. Write the sinusoidal function, f(t), that models the height of your chair at any time, t I got...
December 11, 2014 by Anonymous

algebra
mr darwin who is found of gardening is pushing a wheelbarrow with a force of 5.0 newtons. there are 11.4 newtons worth of horse manure in the wheelbarrow. the length from the wheel to the end of the handles is 1.6m and the length of the wheel to the center of the bucket is 0....
September 10, 2014 by bob

Angular acceleration
A flywheel of 480 mm diameter is accelerated with an angular velocity of 0.4 rad/s^-2 from rest by an electric motor until it is rotating at 400 revs/minute. Calculate: a) the time of acceleration b) the linear speed of the rim of the flywheel My answer for (a) is 104.7 secs, ...
January 21, 2007 by Jim (BIGEYE)

Physics
For a record playing at 45 rpm, find the frequency and the angular velocity. Frequency= Angular velocity=
April 24, 2012 by Allen

math function2
A ferris wheel turns at a constant speed. the lowest point of the wheel is ground level. a person is standing on a platform 4m about ground. The intervals between two successive times are alternatly 6 s and 18 s. Part A) what is the period of rotation? Part B) what is the ...
January 25, 2015 by Shanu

advanced functions
The manufacturer of a propeller for a small aircraft mandates a maximum operating angular velocity of 300 rad/s. Determine whether it is safe to install this propeller on an aircraft whose engine is expected to run at a maximum of 2800 rpm.
November 8, 2009 by -

Math
Billy is riding on a 20 meter diameter Ferris wheel that is making 3 revolutions per minute. What are your linear velocity and your angular velocity? If there are 8 equally spaced seats on the ferris wheel then what is the length of the arc between two adjacent seats?
May 9, 2014 by Shinku

Math
If a Ferris wheel has a 64 m radius and the center ot the wheel is 84 m above the ground, what is the height of a carriage above the ground starting from 0 degrees to 360 degrees?
April 21, 2013 by Natalie

science
mountain bike wheel has diameter of 40 inches , in how many turns will the bike be able to cover 1 km? note : circumference of circle = pi ((radius)^2) radius = diameter/2
February 27, 2015 by doa'a

math
At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 80 meters and a diameter of 40 meters. It takes the wheel seven minutes to make one revolution. Write the sinusoidal function, f(t), that models the height of your chair at any time, t. I...
November 21, 2014 by kat

Physics
A pitcher throws a curveball that reaches the catcher in 0.55 s. The ball curves because it is spinning at an average angular velocity of 335 rev/min (assumed constant) on its way to the catcher's mitt. What is the angular displacement of the baseball (in radians) as it ...
March 13, 2007 by Mary

Physics
Fairgoers ride a Ferris wheel with a radius of 5.00 {\rm m} . The wheel completes one revolution every 31.5 s What is the average speed of a rider on this Ferris wheel? If a rider accidentally drops a stuffed animal at the top of the wheel, where does it land relative to the ...
July 1, 2010 by Todd

Math
A ferris wheel has a diameter of 10 m and takes 24 sec to make one revolution. The lowest point on the wheel is 1 m above the ground. (4 marks) a. Sketch a graph to show how a rider's height above the ground varies with time as the ferris wheel makes a rotation. Assume the ...
July 23, 2014 by Madi

Chemistry
What is the mass if solute dissolved in the indicated volume of each of the following solutions? (b) 4.25 L of 0.450 M KIO4g (c) 60.0 mL of 0.310 M ZnSO4g (d) 60.0 mL of 0.310 M Ni(NO3)2g
March 26, 2014 by Harry

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